SUBTOTAL - Grouping (not sorting)

Hi Experts,

I would like to add subtotals after every country but only for the first continent. (please look attachment). If I try grouping &sorting, it adds subtotals for all the continents; can I fix it to a specific continent?

Another question, the countries appear in a specific order (thanks to an override) and there is no property that sorts the countries the way I need. Is there a way like EPMInsertCellsBeforeAfterBlock or EPMCopyRange that can help me with my goal?

Thanks,